Personalized Stone Pet Memorial 6-7 Inch Pet Gravestone Marker Pet Headstone. Memorialize your pet with their own customized gravestone. This river rock pet memorial will range in size of 6-7 inches. We will place the name of you pet surrounded by paw prints and include the date of their birth and passing. If you only want the date of passing, that's fine too. Just leave me the details in the "Note to Seller" during checkout.